Are you familiar with the single sided circuit boards? For those that didn’t know what this all about, then you should stick your eyes on this article.

For your information, the most common type is a circuit board that only has printed wiring on one side and all the components are on the other side. A permanent solution to the single-sided circuit board is having it in the shape of a Mobius strip.

The Mobius strip is a surface with only one side, thus it has only one boundary component. The Mobius strip has the mathematical property of being non-orientable. As a result, a model can easily be created by taking a paper strip and giving it a half-twist, and joining the ends of the strips together to form a loop.

Beside that, the ATtiny2313 that has 20-pin device and 17 available output pins, will be used as the main heart in this single-sided circuit board.

To be honest, this project is pretty simple and straightforward, where it only requires you drawing the conductive silver ink throughout the Mobius strip. After that, you’re done with it and can enjoy the using it without any further modification.

You would like to measure temperature of remote objects, but you have no ideas what types of instruments you should use to do this job?

Well, instead of complaining all day long, it’s better for you to DIY the Wireless RF Temperature Transmitter here!

For your information, this project is based on AVR wireless RF temperature transmitter and the source code is written for GCC 3.2 compiler. This project is sending data at 4800 baud using RF radio modules, using the Radiometrix TXM-433 and SILRX-433.

You’ll need to select and Atmel AT90S4433 microcontroller for this project, it’s because it has enough flash (4K), RAM (128 bytes) and 6 A/D inputs in a 28 pin narrow package. The best part about this Atmel AT90S4433 is the RAM will turn out to be a bit tight due to the comm buffers and look-up tables.

For the radio’s part, the TXM-433 transmitter and SILRX-433 are the best selection. However, you must first convert the signal from the RF receiver module to RS-232 using a MAX233.